Pilosella lactucella

Pilosella lactucella (synonym Hieracium lactucella,[1] also called European hawkweed) is a species of perennial plant from the family Asteraceae, found in Europe, New York (United States) and Nova Scotia (Canada).[2] It is 9–20 centimetres (3.5–7.9 in) in height, with stems from 1–2 millimetres (0.039–0.079 in) wide. The leaves are spatula shaped and 5–8 centimetres (2.0–3.1 in) wide. The flowers bloom from May to July, the heads of which are 2–5 centimetres (0.79–1.97 in) tall. It was once described by Carl Linnaeus as Hieracium auricula and Pilosella auricula, but was recategorized by A. E. Roland and M. Zinck in 1998.[3]

Pilosella lactucella
Scientific classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Asterales
Family: Asteraceae
Tribe: Cichorieae
Genus: Pilosella
Species:
P. lactucella
Binomial name
Pilosella lactucella
(Wallr.) P.D.Sell & C.West[1]
Synonyms[1]
  • Hieracium acutisquamum (Nägeli & Peter) Üksip
  • Hieracium amaureilema (Nägeli & Peter) Üksip
  • Hieracium auricula (only some subspecies of P. lactucella)
  • Hieracium kralikii Rouy
  • Hieracium lactucella Wallr.
  • Hieracium littuanicum (Nägeli & Peter) Üksip
  • Hieracium magnauricula (Nägeli & Peter) Üksip
  • Hieracium magnauricula Zahn
  • Hieracium micranthum A.Huet ex Nyman
  • Hieracium nanum Scheele
  • Hieracium serpyllifolium Fr.
  • Hieracium tricheilema (Nägeli & Peter) Üksip
  • Pilosella acutisquama (Nägeli & Peter) Schljakov
  • Pilosella amaureilema (Nägeli & Peter) Schljakov
  • Pilosella kralikii (Rouy) J.-M.Tison
  • Pilosella magnauricula (Naegeli & Peter) Dostál
  • Pilosella melaneilema (Peter) Schljakov
  • Pilosella pseudoblyttii Norrl.
  • Pilosella serpyllifolia (Fr.) F.W.Schultz & Sch.Bip.
  • Pilosella tricheilema (Nägeli & Peter) Schljakov

References
  1. "Pilosella lactucella (Wallr.) P.D.Sell & C.West". Plants of the World Online. Royal Botanic Gardens, Kew. Retrieved 2019-01-29.
  2. "Hieracium lactucella Wallr. European hawkweed". USDA. PLANTS Profile. Retrieved October 6, 2012.
  3. "Hieracium lactucella Wallroth, Sched. Crit. 408. 1822". Flora of North America. Retrieved October 6, 2012.


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